2018-04-10 SM 9a

BRIEFING ITEM Date of Meeting April 10, 2018 DATE: April 2, 2018 TO: Executive Director Stephen P. Metruck FROM: Michael Ehl, Director Aviation Operations Jeffrey Hoevet, Senior Manager Airport Operations SUBJECT: Airport Drives Traffic Enhancement Briefing EXECUTIVE SUMMARY Sea-Tac’s roadway system was designed in the late 1960s when the Airport facilitated the movement of 5 million annual guests. Replacement of the original return-to-terminal loops, immediately adjacent the parking garage, with the South 160th Street recirculation loop in 2008 assisted in removing some 40% of recirculating traffic from the inner drives, and effectively expanding the projected practical capacity of the system beyond its saturation at 40 million annual guests which was forecast in 2016-2017. Given Sea-Tac’s record 40 percent growth in passengers between 2012 and 2017, the roadway system is again strained in peak operating periods, regularly resulting in stop and go conditions on the inbound/southbound lanes of the Northern Airport Expressway. While these conditions historically affected Arrivals/Lower Drive traffic and were limited to nighttime holiday peak periods, 2017 saw the emergence of impacts spread more broadly across the operating day, to include daytime impacts to the Departures/Upper drives. Equally dynamic in nature has been the changing mode split for ground transportation options available to Airport patrons. In particular, the introduction of Transportation Network Companies (TNCs) to Sea-Tac in 2016 drastically altered the volume of vehicles using the roadway system as necessitated by the transit from remote holding lots to the customer pick- up area on the third floor of the…

Open full document

Upcoming Events

PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]